The effect of water immersion ageing on low-velocity impact behaviour of woven aramid–glass fibre/epoxy composites

Imielińska, K.; Guillaumat, Laurent

doi:10.1016/j.compscitech.2004.03.002

Cited by 149 publications

(73 citation statements)

References 21 publications

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“…Hence, surface modification is essential for meta-aramid to enhance the wettability and dyeability of the fiber. To date, numerous approaches concerning surface treatment have been adopted, including chemical method [6,7], plasma treatment [8], gamma radiation [9] and other methods. Although these methods for surface modifications improve the interfacial properties through chemically attaching active functional groups on the surface of fiber or physically etching the surface to increase the surface area, they often cause negative effects on the breaking strength of meta-aramid [10].…”

Section: Introductionmentioning

confidence: 99%

An investigation for the performance of meta-aramid fiber blends treated in supercritical carbon dioxide fluid

Zheng

Zhang

et al. 2015

Fibers Polym

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The physicochemical performance of meta-aramid fiber blends treated in supercritical carbon dioxide fluid was studied at different temperatures. The effects of treatment temperatures on the surface morphology, wettability, chemical and crystal structures, thermal and antistatic properties were investigated by employing Scanning electron microscopy, Dynamic wetting measurements, Fourier transform infrared spectrometry, X-ray diffraction, Thermal analysis and Static half period method, respectively. The result showed that the surface of the treated meta-aramid fiber blends was changed with the treatment temperature increasing and more mild grooves and stripes appeared. The dynamic wetting measurements showed that the water contact angles and absorption time for treated fibers were decreased with temperature increasing. The slight shifts of the characteristic bands of the treated meta-aramid fiber blends were observed in FT-IR spectra with the system temperature increasing. Meanwhile, XRD analysis showed that the diffraction intensities of treated samples were improved in the supercritical carbon dioxide fluid because some re-arrangements and re-crystallizations of the molecule chains generated. TG-DTG analysis indicated that the thermal property of meta-aramid fiber blends could be improved at various temperatures. In addition, supercritical carbon dioxide fluid had little negative influence on the physical and antistatic properties of the meta-aramid fiber blends.

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Section: Introductionmentioning

confidence: 99%

An investigation for the performance of meta-aramid fiber blends treated in supercritical carbon dioxide fluid

Zheng

Zhang

et al. 2015

Fibers Polym

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“…The results obtained have shown that the fracture behaviour under endloaded conditions was clearly affected by the water ingress as shown exemplarily for CF/PEEK-450 and APC-2A composite profiles. Combined effect of water immersion and low velocity impact behaviour has been studied for epoxy resin composites reinforced with woven aramid and glass fibres by Imielinska and Guillaumat [13]. They have found that the delamination threshold load and impact energy absorption were significantly affected by the absorbed water.…”

mentioning

confidence: 98%

The Effects of Thermal Cycles on the Impact Fatigue Properties of Thermoplastic Matrix Composites

et al. 2008

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The effects of thermal cycles on the impact fatigue properties of unidirectional carbon fibre reinforced polyetherimide (PEI) matrix composites were investigated. During the thermal cycles, samples were immersed into boiling water (100°C) and subsequently to ice water (0°C), 50, 200 and 500 times. The changes in viscoelastic properties of the composites were investigated by means of dynamic mechanical thermal analyzer (DMTA). At the second step, thermal cycled composites were subjected to repeated impact loadings, with different impact energies. Instrumented impact test results were presented as a function of force, energy, deformation during the experiments. The scanning electron microscope (SEM) studies were done in order to understand the morphology of fractured samples after impact fatigue loading. The number of thermal cycles and applied impact energy of the hammer are found to have a great importance on the fracture morphology of repeatedly impacted material, as expected.

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“…The polymer matrix and the fibre/matrix interface can be degraded by a hydrolysis reaction of unsaturated groups within the resin [20][21][22][23]. Debonding may occur at fibre/matrix interface [24]. A concern with using flax fibre composites in high humidity conditions is the limited understanding and small database of information of their durability.…”

Section: Introductionmentioning

confidence: 99%

Accelerated wet aging study of flax-reinforced UPR composites

Wang¹

2016

Funct.Mater.

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The plain and satin fabrics were weaved with 66.67 tex flax yarns. With flax fabric as the reinforcement and Unsaturated Polyester Resin (UPR) as the matrix, composites of two, three and four layers were fabricated respectively by the Vacuum Assisted Resin Infusion (VARI) technique. The wetting capability of the composites was tested firstly. The wetting rate illustrated that the weight of the composites were fast increased when immersed in the water. And the impact property of the composites after saturated in the water for different duration time was tested. The impact property of the four-layer plain fabrics composites was decreased after immersing in water for one-, two-and three-month. After reaching the minimum impact property, the impact property was found recovered after six-month water immersion. For the two-and three-layer plain fabrics specimens, the impact property was increased in the whole experiment process. For the two-layer satin fabrics specimens, the impact property was increased initially for one-month, decreased for two-month and three-month and increased instead for six-month after water immersion. Scanning electron microscopy (SEM) confirmed that the enhancement effect of the wet flax fibre may be over-weighed by the degradation effect of the materials. The results indicated that the materials had experienced some forms of physical damage and/or chemical degradation. The weakening of bonding between fibre and matrix and softening of matrix material were also reasons of the decreased composite property. Keywords: Flax/UPR composites, wet aging, impact property.Получены композиты из двух, трех и четырех слоев обычных и атласных тканей сотка-ных с льняными нитями 66.67 tex с помощью метода вакуумной инфузии смолы (VARI). Вначале исследовали смачивание композитов. Скорость смачивания показала, что вес ком-позитов увеличивался при погружении в воду. Затем испытали свойства композитов пос-ле насыщения в воде в течение различного времени. У четырехслойных обычных тканей свойства снижались после вымачивания в течение 1-3 месяцев. После достижения мини-мума свойства восстанавливались через 6 месяцев вымачивания. Для двух-и трехслойных обычных тканей свойства возрастали на протяжении всего эксперимента. Для двухслой-ных атласных тканей возрастание было 1 месяц, 2 месяца -снижение и опять возрастание после 6 месяцев. Сканирующая электронная микроскопия подтвердила, что упрочняющий эффект влажных льняных волокон может уступать эффекту деградации материала. Резуль-таты показали, что материалы подверглись физическим повреждениям и/или химической деградации. Ослабление связи между волокном и матрицей и размягчение материала мат-рицы также были причиной снижения свойств композитов.

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The effect of water immersion ageing on low-velocity impact behaviour of woven aramid–glass fibre/epoxy composites

Cited by 149 publications

References 21 publications

An investigation for the performance of meta-aramid fiber blends treated in supercritical carbon dioxide fluid

An investigation for the performance of meta-aramid fiber blends treated in supercritical carbon dioxide fluid

The Effects of Thermal Cycles on the Impact Fatigue Properties of Thermoplastic Matrix Composites

Accelerated wet aging study of flax-reinforced UPR composites

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